UVA and UVB?
mejona12 etc seems to have taken this personally. It is a general discussion about protection for eyes.
I have a growth on my eye from sun damage which cannot be removed because it will grow back again and again. I wouldn't wish that on anyone.
Mine are prescription from Specsavers, where it’s two for one. My sunglasses are the more expensive frame of the two with a Roxy design, and polarised.
It makes sense because I have to have glasses for reading, and driving. Both cataracts have already been done in the last three years.